Add 12/50 and 84/45, Solve 12/50 + 1 39/45 as a fraction

Add 12/50 and 84/45

1^st number: 12/50, 2^nd number: 1 39/45

12/50 + 84/45 is 158/75.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450

Next, find the equivalent fraction of both fractional numbers with denominator 450
For the 1st fraction, since 50 × 9 = 450,
12/50 = 12 × 9/50 × 9 = 108/450
Likewise, for the 2nd fraction, since 45 × 10 = 450,
84/45 = 84 × 10/45 × 10 = 840/450
Add the two like fractions:
108/450 + 840/450 = 108 + 840/450 = 948/450
948/450 simplified gives 158/75
So, 12/50 + 84/45 = 158/75
In mixed form: 28/75

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad